77190746544 has 60 divisors (see below), whose sum is σ = 216046849200. Its totient is φ = 25727870592.

The previous prime is 77190746543. The next prime is 77190746561. The reversal of 77190746544 is 44564709177.

It is a happy number.

77190746544 is a `hidden beast` number, since 7 + 7 + 1 + 90 + 7 + 4 + 6 + 544 = 666.

It is a super-2 number, since 2×77190746544² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77190746543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2281302 + ... + 2314890.

It is an arithmetic number, because the mean of its divisors is an integer number (3600780820).

Almost surely, 2^77190746544 is an apocalyptic number.

It is an amenable number.

77190746544 is an abundant number, since it is smaller than the sum of its proper divisors (138856102656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77190746544 is a wasteful number, since it uses less digits than its factorization.

77190746544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49562 (or 49553 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 77190746544 in words is "seventy-seven billion, one hundred ninety million, seven hundred forty-six thousand, five hundred forty-four".